The length of the chain is about 15.75 inch.The chains are detachable.They can be removed from the basket.
No, it comes with the coco liners and metal hangers only.
I would go with the bigger size basket
The 3 chains loop into the bottom of an S. hook which could be removed I suppose and you could then attach them to a circular metal loop. The individual links are probably too small to hook over anything else on their own..